Chapter 149, Clairvoyance Global Positioning Navigation System

At the Space Center of Fuyun Group in Longling Town, Li Fu, dressed in a white coat, is discussing the company's future space development plan with others.

"Now that we have our own space plane, there will be no problem in going back and forth to space in the future. However, we are now restricted in many aspects. The navigation and positioning system we use is the Beidou system of the country. If we want to stay in space, we can only choose to dock at the Tiangong Space Station."

"So I think the next step is to build our own navigation and positioning system and our own space station. In this way, we will have our own foothold in space in the future. The further plan is to build our own space station and permanent lunar base on the moon, mine resources, etc."

Li Fu sent the next plan to everyone present through his virtual machine. The more the company develops, the more Li Fu feels that he is constrained and it is difficult to carry out.

Let alone, every time the space plane goes back and forth to space, it must apply in advance. Maybe now it is because the policy allows it, so the application is easily approved. If the policy changes in the future, then in a word, Fuyun Group will find it difficult to maintain.

If the company continues to grow and develop in the future, and the scientific experiments it needs to conduct have a greater impact, then there will be more constraints, which makes Li Fu feel helpless.

"Maybe I should learn from the founding emperor of the Han Dynasty."

This thought flashed through his mind, but soon Li Fu didn't think much about it and continued to discuss the future space development plan with his subordinates.

"Brother Fu, we should also build space factories, space energy bases, and develop space agriculture in space."

Yu Liang also seemed very excited at this time, grinning and opening his mouth wide.

"Don't think too much. Our next step is to develop our own global positioning satellite system, and then build a space station for ourselves."

"Global positioning satellite system is not difficult. We just need to make satellites and use aerospace planes to launch them all into space at once. As for the space station technology, it is not difficult either. I just don't know whether the country will allow our private enterprises to have their own space stations."

"In space, there should be no need to worry about this, right?"

"That being said, it is better to apply to the country."

Everyone discussed it one by one. The core of the discussion was that many things in space should not be applied to the country. After all, according to the consistent principle, this space belongs to all mankind, not to any country. But everyone is Chinese, and it seems unreasonable not to apply to it.

...

At the Longling Town Space Center, the huge aerospace plane "Hercules 1" rushed into the sky like an arrow from a string with bursts of roars, and arrived in space a few minutes later.

Its huge belly contains 36 satellites manufactured by Fuyun Group. These 36 satellites are used by Li Fu to build his own global positioning navigation system.

Generally speaking, to accurately locate the ground through satellites in space, at least 3 satellites are generally required. However, when performing pseudo-range single-point positioning (absolute positioning), since the pseudo-range measurement observation value of each satellite contains the error of the receiver clock error, the distance measurement observation value is very inaccurate. It is necessary to add the receiver clock error as an unknown number to the calculation of pseudo-range single-point positioning, plus the three unknown numbers of coordinates, so at least 4 pseudo-range observation values ​​are required, that is, at least 4 positioning satellites need to be observed at the same time to achieve accurate and real-time positioning.

To cover the global range, the number of satellites required is at least 24. This number can ensure that at least 4 satellites can be seen at any time in every place in the world. Through 4 equations, the four variables of spatial three-dimensional coordinates and time can be solved. These 24 satellites are distributed in 6 orbital planes, each with 4 satellites. The receivers of the positioning system all use passive positioning (that is, the receiver does not need to send signals).

Uncle Sam's Global Positioning System (GPS) and the Polar Bear's GLONASS system both use 24 satellites for global positioning, but China's Beidou Navigation System has 35 satellites. The difference is due to the different altitudes of their satellites in space.

Uncle Sam and the Polar Bear developed earlier, so they occupied the best positions. They can achieve global positioning and navigation with only 24 satellites. China developed later and did not have a good position, so it needed 35 satellites.

Now Fuyun Group wants to build its own global positioning and navigation system, so the position is even worse. Therefore, after careful research and planning, Fuyun Group Research Institute has manufactured 36 satellites to build its own global positioning and navigation system.

The space plane soared into the sky, and it entered space in just a few minutes, and began to orbit the earth, adjusting its altitude and orbit, and preparing to launch satellites.

The traditional method of launching satellites is to use a carrier rocket to send the satellite launcher into the predetermined orbit and then launch it. In this way, the launch of satellites is generally subject to great restrictions.

On the one hand, the carrying capacity of the launch vehicle is limited, and it is impossible to launch a spacecraft with too large a mass. Moreover, a Mars can only launch one satellite. There are many cases of launching multiple satellites with one rocket, but the mass of these satellites is very small, and some are only a few kilograms, which is not very useful in space.

On the other hand, because the fuel of the launch vehicle is limited, when launching a satellite, it is necessary to send the satellite into the scheduled orbit as soon as possible. Otherwise, if there is a deviation, it will be difficult to adjust it, which means the failure of the launch.

Therefore, although the global positioning navigation system only needs 20-30 satellites to be realized, there are only Uncle Sam's GPS, the polar bear's GLONASS, China's Beidou navigation system, and Europe's Galileo navigation system in the world. In addition, no other country has its own global positioning navigation system.

One of the important reasons is that the mass of the positioning and navigation satellite is large and it is difficult to send it into orbit. Ordinary countries simply do not have such a strong ability to complete it.

China also established the Beidou navigation system soon after the appearance of the aerospace plane, because it can be very simple to use the aerospace plane to launch satellites.

The carrying capacity of the space plane is very strong, which is calculated in tons. Dozens of satellites can be easily transported to the sky together. The most important thing is that the space plane can also easily adjust its altitude and orbit to send satellites one by one into the predetermined orbit.

"Ding, orbit altitude 23,000 kilometers, start releasing the first satellite."

Luo Xiaoyao received the order and gently pressed a button.

Behind the belly of the huge space plane, a huge satellite with a mass of more than 2,000 kilograms was slowly pushed out by the booster. Once it entered the space, the solar panels carried on it quickly unfolded slowly, and it began to fly around the earth like a pair of wings.

At the Longling Town Space Center on the ground, Li Fu and others seemed a little nervous at this time. Satellites are not too technically demanding. Uncle Sam's high school students have even made satellites and launched them into space. With so many scientists in Fuyun Group, it is naturally not difficult to make satellites.

"Ding, the first satellite was successfully launched and entered the scheduled orbit. It is expected to pass over China in 2 minutes."

"Ding, receiving satellite signals, signal communication is normal."

Two minutes later, the satellite passed by China, and the space center successfully received the satellite's signal. The satellite can work normally and the launch is successful.

"Haha, although it is the first time to manufacture a satellite, we are not very good at technology, but we have an aerospace plane, so it doesn't matter if we can make the satellite bigger."

Li Fu laughed happily at this time. Because it was the first time to manufacture a satellite, there was no experience, so the satellite was made very bulky. If it was not for the aerospace plane and the launch vehicle, it would really be scolded to death by aerospace scientists.

Because the larger the mass and volume of the satellite, the higher the requirements for the launch vehicle, the greater the cost of launch, and the higher the possibility of failure. However, Fuyun Group has an aerospace plane, so mass and volume are not the main factors to consider. If the technology is not good, it can be compensated by other aspects, and it doesn't matter if the satellite is made bigger.

"Begin adjusting the orbit and altitude, and prepare to launch the second satellite."

The aerospace plane constantly adjusts and pushes satellites in space, sending satellites one by one into the scheduled orbit and altitude. As more and more satellites are in space, the space center will soon be able to accurately locate them.

"There are 4 satellites in space. So far, the location of the space center is 115°40' east longitude and 26°20' north latitude."

"Boss, the positioning accuracy of our own Thousand-mile Eye Navigation System is no worse than that of the Beidou Navigation System."

Chen Bin looked at the data located by the navigation system and said to Li Fu excitedly.

"Well, it's okay. Let's see how the picture taken by the high-definition camera on the satellite looks like?"

Li Fu nodded with satisfaction. At this time, on the huge display in the center, a map of the earth was constantly being improved. This map was created by the information collected by his company's Thousand-mile Eye Navigation System.

The Thousand-mile Eye Navigation Satellite is not just used for navigation. Because it is large enough, it also carries an ultra-high-definition camera.

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